Method of and apparatus for coking crude-oil residuum.



T. E. MURRAY &E. B. RICKETTS.

METHOD OF AND APPARATUS FOR COKING CRUDE OIL RESIDUUM.

APPLICATION FILED NOV, 20, I917- Patented Feb. 11, 1919 INVENTORS 2,

MM PM [3 fink ATT I and EDWIN B. RICKETTS, citizens of the THOMAS E. MURRAY AND EDWIN B. RICKETTS, OF NEW YORK, N. Y.

Specification of Letters Patent.

Patented Feb. 11, 19159.

App1ication filed November 20,1911 Serial No. 202,938.

To all whom it may concern:-

Be it known that we, HOMAS E. MURRAY United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Methods of and Apparatus for Coking Crude-Oil Residuum, of

l which the following is a'specificati'on.

The invention is a method of coking crude oil residuum, and an a paratus for carrying said method into e ect.

The residuum 1s caused to pass over the inner surface of a casing or shell "in the form of a thin layer, and while so passing is subjected to a current of hot gas. Because of its enlarged evaporating surface, the volatile'products in said layer are rapidly driven ofi, 'while the coke simultaneously is deposited upon the shell surface,

from which it is removed from time to time..

The apparatus herein disclosed embodies a vertical cylindrical shell, through which the current of hot gas is caused to pass upwardly, while the residuum projected upon the inner surface of said shell in the form of expanding jets from a plurality of delivery pipes flows down said surface and so surrounds the upwardly rising gas current. v

In the accompanying drawings-- Figure 1 is a vertical "section of our coking tower. Fig. 2 is a top view.

Similar letters of reference indicate like parts.

A is a cylindrical still shell, open below and supported in any suitable way preferably above a pit B which contains water, into which the lower end of said shell enters. On one side of'the shellis a chamber 0, into which enters a gas burner D, the heated gas current from which passes upwardl through the shell and escapes at the duct 1%,

which here opens into shell A through the head F.

Above the shell is a ring duct G which by pipe H communicates with a source of supply of the crude oil residuum to be coked, any suitable means (not shown) being provided for forcing said residuum under pressure through said pipe H'to ring G. Depending from ring G and passing through head F are a number of short'delivery pipes I. The outlet ends of {said pipes are flared, and said ends are turned horizontally, so that the escaping residuum is projected from said thin a current of hot current of hot gas from burner D, and because of its thin or film-like character, the volatile productsin the case of crude oil residuum, fuel oil and wax tailingsare rapidly by duct E. The coke is deposited upon the evaporated, and pass off, as stated,'

inner surface of the shell, and can be readily detached therefrom by percussion on the outside of said shell, so that it falls 0E and drops into the water in pit B, from which it is removed by any suitable implement through the portion of said pit, at J, which is uncovered by the shell.

The object of flaring the ends of delivery pipes I is to project the residuum as flaring or expanding jets, and in this way insure that the layer, sheet or streams which flow down the inner surface of the shell shall be thin, and so readily volatizable by the hot gas.

The pipe H is here shown surrounded by a jacket K, through which may be passed hot gas from any suitable source. I

. We claim: Y

1. The method of coking crude oil residuum, which consists in causing said residuum to flow in a thin layer over the inner surface of a chamber, and simultaneously current of hot gas to pass over layer; whereby the volatile prodnets of said residuum are evaporated and the. coke caused to deposit on said surface.

causing a 2. A coking tower, for crude oil residuum,

comprising a vertical tubular shell open at its lower end and having a. head. at its upper end, an escape duct for volatile products communicating with the top of said tower, means for delivering the residuum to be coked in a plurality of jets against the inner surface of said shell near the top thereof, and means for delivering gas into said shell near the bottom thereof; whereby said residuum is caused to descend said inner shell surface in a thin layer surrounding the rising column of hot gas in said shell.

' 3. A coking tower for crude oil residuum, comprising a vertical tubular shell open at its lower end, and having a head at its upper end, an escape duct for volatile products messes means for establishing a current of hot gas upwardly through said shell to said escape duct, a plurality of ducts entering said tower throughsaid head and having their lower ends outwardly turned and disposed respectively in proximity to the inner surface of said shell to deliver jets of said residuum against said shell, and means for delivering said residuum to said ducts; whereby said residuum is caused to descend said inner shell surface in a thin layer surrounding the rising column of hot gas in said shell.

4. A coking tower as claimed in claim 3, including a ring duct supported above said tower, to which duct the inlet pipe for residuum and the delivery ducts entering said tower are connected.

5. A coking tower for crude oil residuum, comprising a vertical tubular shell, a plurality of delivery ducts for said residuum disposed within said shell and having their ends flared and turned to project said residuum in expanding jets against the inner surface of said shell, means for conveying said residuum to said ducts, and means for causing a current of hot gas to pass over the layer of residuum projected against said shell surface.

6. A coking tower as claimed in claim 5, including means for causing said current of hot gas to pass over said layer of residuum in a direction opposite to that of the flow of said layer over said surface.

In testimony whereof we have. ai'liXed our signatures in presence of two Witnesses.

THOMAS E. MURRAY. EDWIN B. RICKETTS. Witnesses:

GERTRUDE T. PORTER, MAY T. MCGARRY. 

